This is the thirty-first installment of the Fortnightly Topic Challenge described here, with topics suggested and voted on here. This fortnight's topic is (suggested by Mithrandir), and will span from the the 5th of June to the 18th of June. During this period, we will compile the list of questions with this tag and post it as an answer to this question.

In the meantime, please go and propose and vote on future challenges!

Everyone have fun, and happy puzzling!

Link to other Fortnightly Topic Challenges.

  • 1
    $\begingroup$ Does this question count as a [steganography] puzzle? If so, it should be listed in the answer below :) $\endgroup$
    – Glorfindel
    Jun 10, 2017 at 19:34

1 Answer 1


List of all questions published as part of the Fortnightly Topic Challenge #31:

The highest-voted of these is Messages hidden in the "visit every square once" puzzle, with a score of 24 at the end of the fortnight.

The most viewed is Messages hidden in the "visit every square once" puzzle, with approximately 2,404 views during the fortnight.

  • $\begingroup$ Does this count, or should we only list actual puzzles and not questions? $\endgroup$ Jun 10, 2017 at 22:08
  • $\begingroup$ @randal'thor I don't see a problem with including it. Probably a question worth it's own meta post though. After all, asking a "how to solve [current challenge]" every fortnight could be undesirable. $\endgroup$ Jun 10, 2017 at 22:20

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